Got me the same night too 6 channels of noise Levels looked fine was running for about 4 hrs came back to hotel found the surprise,I had the same exact thing happen ,I emailed him about the 2.3 soon as i had it happen he got right back to me.My issue with 2.2 is speed error issues,Now twice with 2.2 i have had the deck crash and lose everything or one card get the speed error issue and the other one do what it should and back it up,Put another card in same brand and get the next 2 hrs down no crash but all 6 of my cards now have done it like that. I had zero issues prior to that.Always seems to happen right at 20 mins sometimes 1 min into a show.Hope they can fix everything i personal just need the mono tracks not poly files and the speed card error addressed.Love the deck and Got some great recordings out of 6 shows i did get.